Cyberduck is the best FTP client I've ever used for OSX, and I've used a fair few. It's far, far better than Fetch which was giving me no end of grief. It also does SFTP. And it's free/opensource/worth donating to. And, even though it says it shouldn't: it works fine on 10.2.8
I was actually in my MT install whilst I got hit by a spam attack, this time. Only 140-odd. Vaped them all in seconds with MT-Blacklist. Ha! Eat that! (I feel much better about things).